Here’s a question I’d love for someone to answer: Why does NCH Software, creators and distributors of both free and commercial versions of Switch software for converting audio file types, claim they must charge an extra $2.50 US on top of $40 US (normal price) or $30 US (sale price) to provide:
Mp3 Patent License Fees select for legal use of joint stereo or low bitrate under 32kbps mp3 mode
This seems like a ploy by NCH Software to encourage more people to upgrade to the paid version of Switch software, rather than a legitimate claim. I don’t understand how Audacity can support low kilobit mp3 exports via LAME without a problem but Switch creators can’t unless they charge a fee. If you can explain this I’d love to read your comments.
I used Switch this evening to convert audio recordings from last Friday’s TCEA Area 7 Technology Conference in White Oak, Texas, which I recorded on my iPhone using the free Cinch app, from 64 kbps mp3 format to WAV format. I needed to convert to WAV so I could normalize the audio using Levelator software, free from the Conversations Network. I needed to convert the WAV file the Levellator created into small, lightweight, 16 kbps mp3 files I could upload to the Fuel for Educational Change Agents podcast channel.
The file size difference between 64 kbps mp3 and 16 kbps files are significant. As an example, here are the different file sizes I worked with this evening publishing Randy Rodgers’ presentation, “Unleashing Creativity: Web 2.0 Tools for Creativity and Innovation.” This audio recording is 54 min, 51 sec long.
- Original 32 kbps mp3 file created by Cinch app: 26.3 MB
- WAV version converted by Switch: 583.4 MB
- Normalized WAV version created by The Levellator: 583.4 MB
- 16 kpbs version compressed by Audacity: 6.6 MB
In this example, you can not only see the HUGE file size differences possible using mp3 compression, relative to the uncompressed WAV format, but also the benefit of further compressing mp3 files to low bitrate, 16 kbps versions. I created a simple graph to further visualize these differences. (I used the free, online NCES Graphing Tool and made a screenshot of the finished graph with Skitch.)
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On this day..
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- Playing with Doink Animation - 2011
- 3 months of planning for 2 minutes of StopMotion - 2009
- When we blog, we create the web - 2009
- Defining 21st century classrooms and Highlighting the Importance of CCC - 2009
- Blending Professional Development to focus on Content, Technology and Pedagogy - 2009
- Notes on the Texas Long Range Technology Plan: 2006-2020 - 2009
- Stopmotion Film Camp Starts Monday! - 2009
- Google Earth explorations - 2008
- Podcast257: Natural Learning - What Schools Don’t Do by Steve Wycoff - 2008